treadwell



2 Sheets-Sheet L E. TREADWELL.

Bakers Oven.

Patented July19, 1853.

- 2 SHeets-Shet 2. E. TREADWELL.

Bakers Oven.

Patented July 19, 1853.

m m nw UNITED STATES PATENT OFFICE.

EPHRAIM TREADWELL, OF NEW YORK, N. Y.

OVEN.

Specification forming part of Letters Patent No. 9,864, dated July 19, 1853; Reissued August 25, 1857, N0. 487.

T0 alt whom it may concern:

Be it known that I, EPHRAIM TREADWELL, of the city, county, and State of New York, have invented new and useful Improvements in Perpetual Ovens with an Endless Apron for Baking Crackers and other Articles; and I do hereby declare the following to be a full description of the same.

The nature of my invention consists in making a perpetual oven, having side doors in it for charging and discharging it at intermediate points between the ends of the oven, in combination with upper and lower independent heating fines and furnaces, for directing the entire heat from one set of furnaces through fiues on the upper side of the article tobe baked, and the entire heat from the other independent set of fur naces through flues on the under side of the article to be baked. But to describe my invention more particularly I will refer to the accompanying drawings, forming a part of this schedule, the same letters of reference, wherever they occur referring to the same parts.

Figure 1, is a view of the right side of the oven, showing by the dotted lines the position of the tubular fiues. Fig. 2, is a view of the back side of the oven, showing the exit ports from the two series of tubular fiues to the chimney. Fig. 3, is a longitudinal cut section of the oven. Fig. t, is a plan view of the oven, having the top removed. Fig. 5, is a front elevation of the oven. Fig. 6, is a cut sect-ion of the front end of the oven through the dotted line a, w, of Fig. 3.

Letter A, is the oven, which is made of brick or other suitable material for the purposes required. In the front end of the oven is arranged the two furnaces B, and B, having separate fiues G, and D, communicating with chambers E, and F. Connecting with these chambers, are two sets of tubular flues G, and H, which may be made of any suitable diameter and length for the purposes required, and terminating or ending in two other distinct chambers, I, and J, at the opposite end of the oven, which discharge at the back side of the oven from distinct ports K, and L, into the chimney. These tubes are placed horizontally lengthwise of the oven, which has a floor M, and

a roof or top N, for confining the radiating heat from the tubular lines, which are placed about one foot more or less asunder so as to admit of the endless wire cloth apron P, (shown by the red lines in the several drawings,) to pass between them, and the crackers or other articles to be baked being placed thereon and removed by the workmen through the doors or ports R, R, R, in the side of the oven.

Letter S, is a scraper arranged in the end of the oven, on hinges, or other suitable contrivance, so as to allow one edge to rest upon the apron, as it passes between the upper and lower series oftubes, for collecting the crackers, and preventing them from being carried with the apron around the drums T, T, supported on brackets U, U, at the outside of the oven, so as to carry the apron through openings in the back and front ends of the oven, over the upper series of tubes, and through other openings lower down in the front and back ends of the oven, between the upper and lower series of tubes, so that the crackers or other articles to be baked may be exposed on their upper and lower sides to the entire radiated heat of the tubes, and reflected heat from the roof and floor of the oven, to bake them while passing through the oven on the endless wire cloth apron, thereby making a perpetual oven.

Having now described my invention I will proceed to state what I claim and desire to secure by Letters Patent of the United States.

WVhat I claim therefore is The use. of a perpetual oven having side doors in it, for charging and dischargng it, at intermediate points between the ends of the oven, in combination with upper and lower independent heating fines and furnaces, for directing the entire heat from one set of furnaces through flues on the upper side of the article to be baked, and the entire heat from the other independent set of furnaces, through flues on the under side of the article to be baked, substantially as hereinbefore set forth.

EPHRAIM TREADWVELL. lVitnesses present:

CHARLES L. BARRITT, WILLIAM E. TREADWELL.

[FIRST PRINTED 1913.] 

